Owners manual

General advice
When you have any print-quality problem:
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To achieve the best performance from your printer, use only genuine manufacturer's supplies and
accessories, whose reliability and performance have been thoroughly tested to give trouble-free
performance and best-quality prints. For details of recommended papers, see Order paper on page 142.
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Make sure that the paper type selected in the front panel is the same as the paper type loaded into the
printer (see View information about the paper on page 58). At the same time, check that the paper type
has been calibrated. Also make sure that the paper type selected in your software is the same as the
paper type loaded into the printer.
CAUTION: If you have the wrong paper type selected, you could experience poor print quality and
incorrect colors, and perhaps even damage to the printhead.
●
Check that you are using the most appropriate print-quality settings for your purposes (see Printing
on page 64). You are likely to see lower print quality if you have moved the print-quality slider to the
'Speed' end of the scale, or set the custom quality level to Fast.
●
Check that your environmental conditions (temperature, humidity) are in the recommended range. See
Environmental specifications on page 197.
●
Check that your ink cartridges and printhead have not passed their expiration dates: see Maintain the
ink cartridges on page 137.
For the latest information, please visit http://www.hp.com/go/T920/support or http://www.hp.com/go/
T1500/support.
Print-quality troubleshooting wizard
The print-quality troubleshooting wizard can help with the following problems:
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Horizontal lines across the image (banding)
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The whole image is blurry or grainy
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Lines are too thick, too thin or missing
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Colors are inaccurate
To start the wizard:
● From the HP DesignJet Utility for Windows: Go to the Support tab, and select Print Quality Toolbox.
● From the HP Utility for Mac OS X: Select Print quality troubleshooting in the Support group.
● From the Embedded Web Server: Go to the Support tab, then select Print quality troubleshooting.
●
From the front panel: Press , then , then Image quality maintenance.
Alternatively, or if you have other print-quality problems, you can continue reading this chapter.
ENWW General advice 157